Electrical surveying systems/I.P. Geophysical surveys and safeguards

Where an induced polarization geophysical system is being operated, all energized wires shall be sufficiently insulated to prevent an electric shock when the system is being operated at its maximum rated voltage; the electrodes shall have visible warning stickers stating “Danger - High Voltage”, and the person in charge of the survey shall ensure that– (a) signs are posted at the entrances to the area where induced polarization surveys are being carried out to warn other persons who may enter the area; (b) radio communication is provided to any member of the crew whose movements are out of sight and hearing of the other crew members; and (c) all signs and wires used for the survey are removed upon completion of the survey.